IR RX20 - Infrared receiver Williams Sound - Free user manual and instructions

Product Type	Infrared (IR) Receiver for Assistive Listening
Brand	Williams Sound
Model	IR RX20
Category	Uncategorized
Dimensions (approx.)	5.5 x 2.5 x 1.5 inches (140 x 64 x 38 mm)
Weight (approx.)	0.2 lbs (90 g) with battery
Power Source	Rechargeable NiMH battery (2 x AA, 2.4V) or external power
Battery Life	Approximately 8 hours per charge
Charging Time	Approximately 16 hours
Frequency Response	100 Hz to 8 kHz
Carrier Frequency	95 kHz typical (IR wavelength 940 nm)
Channels	1 (single channel, may vary by version)
Controls	Volume knob, ON/OFF switch, optional channel selector
Audio Output	3.5mm stereo headphone jack
LED Indicators	Power/battery status, IR signal reception
Attachment	Belt clip included
Operating Range	Up to 50 ft (15 m) line-of-sight from emitter
Materials	High-impact ABS plastic body
Maintenance & Cleaning	Wipe with a dry, soft cloth; do not use liquids or abrasives
Safety	Complies with FDA / FCC regulations; keep away from moisture
Spare Parts & Repairability	Contact Williams Sound for replacement batteries, earphones, and optional accessories
Warranty	2-year limited warranty on parts and labor
General Info	Designed for use with compatible IR emitters; ideal for classrooms, churches, and meetings

Frequently Asked Questions - IR RX20 Williams Sound

How do I turn on the IR RX20 receiver?

Slide the ON/OFF switch to the ON position. Green LED will illuminate if battery is charged.

Can I use the IR RX20 with any IR emitter?

The IR RX20 is designed to work with Williams Sound IR emitters (e.g., IR T45 or IR T60). It may not be compatible with other brands.

How long does the battery last?

Fully charged NiMH batteries provide approximately 8 hours of continuous use.

How do I charge the batteries?

Connect the external charger (sold separately) or charge via the DC input using a compatible power adapter. Charge time is about 16 hours.

What type of headphones should I use?

Use standard 3.5mm stereo headphones or earbuds. For best performance, use headphones with an impedance of 16-32 ohms.

Can I adjust the volume?

Yes, rotate the volume knob clockwise to increase volume, counterclockwise to decrease.

Why is there no sound?

Check that the receiver is turned on, the volume is up, headphones are connected, and the unit is within range of an active IR emitter. Also ensure the emitter is transmitting.

How do I clean the device?

Wipe the exterior with a dry, soft cloth. Do not use water, solvents, or abrasive cleaners. Keep the IR window unobstructed.

Is the IR RX20 waterproof?

No, it is not waterproof. Avoid exposure to rain, splashes, or excessive humidity. Store in a dry place.

Where can I find spare parts or service?

Contact Williams Sound customer support or visit their website for replacement batteries, earphones, and repair options. The unit has a 2-year limited warranty.

USER MANUAL IR RX20 Williams Sound

IR RX20 Infrared Receiver

2.3 MHz, 2.8 MHz, Stereo

USER MANUAL

Black electronic earband device with two earbuds (no visible text or symbols)

The IR RX20 is an infrared receiver. The receiver can be connected to a neckloop to be used with a T-Coil enabled hearing aid, or be used as is as a headset.

The headset works with all Williams Sound 2.3 or 2.8 MHz infrared systems.

Accessories and Replacement Parts

Single device charger: IR ACC PAC featuring the TFP 055

Optional 5 bay battery charger: CHG 520

Replacement Ear Tips: EAR 089

Safety Information

Hearing Safety

CAUTION! This product is designed to amplify sounds and creates high sound pressure, which could potentially cause hearing damage if used improperly. To protect your hearing and the hearing of others:

• Make sure the volume is turned down before putting on the earphone or headphone before adjusting the volume to a comfortable level.
• Do not listen to at high volume levels for long periods, as it could be a hearing damage risk.
• Set the volume level at the minimum setting that you need to hear.
• Do not allow children or other unauthorized persons to have access to this product.

Battery Safety & Disposal

CAUTION! To reduce the risk of fire or burns, do not attempt to open, disassemble, or service the battery pack. Do not crush, puncture, short contacts or dispose of in fire or water. Do not incinerate or expose to temperatures above 140^ F ( 60^ C). Replace only with battery pack designated for this product: a rechargeable Lithium-polymer battery.

Like all lithium batteries, the lithium batteries used in the IR RX20 have a limited number of charge/discharge cycles. Lithium batteries may experience swelling if used beyond their expected lifecycle (2 years). If you notice swelling of the battery, please discontinue use and have the battery replaced. We recommend battery replacement after 2 years of use. Recycle or dispose of old batteries properly.

Pacemaker Safety

CAUTION! Before using this product with a pacemaker or other medical device, consult your physician or the manufacturer of your pacemaker or other medical device.

If you have a pacemaker or other medical device, make sure that you are using this product in accordance with safety guidelines established by your physician or the pacemaker manufacturer.

Recycling Instructions

Help Williams AV protect the environment! Please take the time to dispose of your equipment properly.

Please Recycle

Please do NOT dispose of your equipment in the household trash. Please take the equipment to a electronics recycling center for proper disposal.

Operating Instructions

Simple line drawing of a symmetrical abstract shape with two conical ends and a central oval base (no text or symbols)

Line drawing of a dual-arm connector with a central display and base (no text or symbols)

Before you begin using the RX20 receiver, make sure the IR transmitter being used is transmitting on 2.3 MHz or 2.8 MHz frequencies. Make sure the audio source is on, and the receiver battery is fully charged.

Use the 3-position selection switch to choose from 2.3 MHz, 2.8 MHz, or stereo mode. Rotate the Volume Control to adjust the volume to a comfortable listening level.

To use with a neckloop, connect the neckloop into the headphone jack.

A dual detector infrared detector is located on the front of the receiver. Do not cover it up or you will lose reception. Make sure the power switch is lying near your chest when you put the receiver on.

The IR RX20 Receiver (with internal LiPo battery) should be charged when not in use.

Front and Back View of the IR RX20

Warranty

Williams Sound products, a brand owned by Williams AV, are engineered, designed and manufactured under carefully controlled conditions to provide you with many years of reliable service. Williams AV warrants the IR RX20 Receiver against defects in materials and workmanship for FIVE (5) years. During the first five years from the purchase date, we will promptly repair or replace the IR RX20 Receiver.

Earphones, headphones, microphones, batteries, cables, carry cases, and most other accessory products carry a 90-day warranty. WILLIAMS AV HAS NO CONTROL OVER THE CONDITIONS UNDER WHICH THIS PRODUCT IS USED. WILLIAMS AV, THEREFORE, DISCLAIMS ALL WARRANTIES NOT SET FORTH ABOVE, BOTH EXPRESS AND IMPLIED, WITH RESPECT TO THE IR RX20 RECEIVER, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. WILLIAMS AV SHALL NOT BE LIABLE TO ANY PERSON OR ENTITY FOR ANY MEDICAL EXPENSES OR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES CAUSED BY ANY USE, DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT, WHETHER A CLAIM FOR SUCH DAMAGES IS BASED UPON WARRANTY, CONTRACT, TORT OR OTHERWISE. THE SOLE REMEDY FOR ANY DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT IS REPLACEMENT OF THE PRODUCT. NO PERSON HAS ANY AUTHORITY TO BIND WILLIAMS AV TO ANY REPRESENTATION OR WARRANTY WITH RESPECT TO THE IR RX20 RECEIVER. UNAUTHORIZED REPAIRS OR MODIFICATIONS WILL VOID THE WARRANTY.

The exclusions and limitations set out above are not intended to, and should not be construed so as to contravene mandatory provisions of applicable law. If any part or term of this Disclaimer of Warranty is held to be illegal, unenforceable or in conflict with applicable law by a court of competent jurisdiction, the validity of the remaining portions of this Disclaimer of Warranty shall not be affected, and all rights and obligations shall be construed and enforced as if this Limited Warranty did not contain the particular part or term held to be invalid.

The warranty period beings on the date of purchase.

If you experience difficulty with your system, call Toll-Free for Customer Assistance:

1-800-843-3544 (USA) or [phone] (outside of USA)

If it is necessary to return the system for service, your Customer Service Representative will give you a Return Authorization Number (RA) and shipping instructions.

Pack the system carefully and send it to:

Williams AV

Attn: Repair Dept.

10300 Valley View Rd

Eden Prairie, MN 55344